纤维缠绕壳体水压试验的声发射技术

ACOUSTIC EMISSION TECHNIQUE OF WATERPRESSURETEST IN FILAMENTWOUND CASE

本文阐述了声发射技术的特点、主要参数及其对损伤缺陷的鉴别。利用声发射技术监测了纤维缠绕壳体水压试验过程。分析了随着水压增加从基体开裂、层间分层及纤维断裂到最终破坏与声发射信号的关系；研究了水压过程中出现的两次声发射峰所对应的压强与壳体爆破压强的关系。

Characteristics of acoustic emission (AE) technique and its main parameters are both expounded,and the identification of damage defects is described with AE technique.The waterpressuretest (WPT) processes of the filamentwound case (FWC) are supervised with AE technique.Moreover,the relation between AE signals and the failure processes of FWC from matrix cracks,delaminations,fiber breaks to burst with the water pressure increasing is analyzed.It is sutdied that the relationship between the burst pressure and the pressure corresponding to twice AE peak values in the WPT processes as well.